The RDS Spy allows analyzing the RDS data and
adjusting all RDS services before final installation of the encoder. In most cases, you
don't need any special hardware, just a standard PC.

There's a direct support included for the P132
family RDS encoders, i.e. you can connect directly the RDS Spy to any of the RDS encoder's
communication port and see all outgoing data in real time, incl. RT+ tagging, binary
content etc. This unique feature has no equivalent in other RDS encoders.

The 57 kHz subcarrier from the RDS output can be
also processed by a sound card that supports 192 kHz sampling rate for recording. For
other sound cards a simple half-wave rectifier can provide similar functionality and gives
a way how to analyze the data from any RDS encoder.